One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9,11,6)(4,7)(5,8)(10,15,16,13)(12,14)(17,18)(19,26)(20,25)(21,29)(22,24)(23,27)(28,32)(30,31)(33,34,36,39,37,40,43,46)(35,38,42,45,41,44,47,48)(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(17,19,22,28)(18,23,24,31)(20,27,21,30)(25,32,29,26)(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(18,24)(23,31)(25,29)(26,32)(33,35)(34,38)(36,42)(37,41)(39,45)(40,44)(43,47)(46,48)(17,20,22,21)(18,25,24,29)(19,27,28,30)(23,32,31,26)(35,41)(38,44)(42,47)(45,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.